Textbook Question
Mark the following statements as true or false. If a statement is false, correct it to make a true statement.
Fibroblasts store lipids in a large inclusion in their cytoplasm.
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Ch. 4 Histology
Amerman2nd EditionHuman Anatomy & PhysiologyISBN: 9780136873822
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Table of contents
- Ch. 1 Introduction to Anatomy and Physiology26
- Ch. 2 The Chemistry of Life38
- Ch. 3 The Cell55
- Ch. 4 Histology47
- Ch. 5 The Integumentary System30
- Ch. 6 Bones and Bone Tissue36
- Ch. 7 The Skeletal System40
- Ch. 8 Articulations19
- Ch. 9 The Muscular System36
- Ch. 10 Muscle Tissue and Physiology29
- Ch. 11 Introduction to the Nervous System and Nervous Tissue28
- Ch. 12 The Central Nervous System42
- Ch. 13 The Peripheral Nervous System41
- Ch. 14 The Autonomic Nervous System and Homeostasis31
- Ch. 15 The Special Senses39
- Ch. 16 The Endocrine System42
- Ch. 17 The Cardiovascular System I: The Heart30
- Ch. 18 The Cardiovascular System II: The Blood Vessels43
- Ch. 19 Blood32
- Ch. 20 The Lymphatic System and Immunity45
- Ch. 21 The Respiratory System27
- Ch. 22 The Digestive System27
- Ch. 23 Metabolism and Nutrition7
- Ch. 24 The Urinary System39
- Ch. 25 Fluid, Electrolyte, and Acid-Base Homeostasis39
- Ch. 26 The Reproductive System10
- Ch. 27 Development and Heredity5
Chapter 4, Problem 7c
Compare and contrast the following pairs of terms:
Holocrine secretion and merocrine secretion
Verified step by step guidance1
Define holocrine secretion: Holocrine secretion is a type of exocrine gland secretion where the entire cell disintegrates to release its contents. This process involves the accumulation of secretory products within the cell until the cell ruptures, releasing both the product and cellular debris into the duct. An example is sebaceous glands in the skin.
Define merocrine secretion: Merocrine secretion is another type of exocrine gland secretion where the secretory products are released via exocytosis. In this process, the cell remains intact and functional after secretion. An example is sweat glands (eccrine glands) in the skin.
Compare the mechanisms: Holocrine secretion involves the destruction of the entire cell, while merocrine secretion preserves the cell's structure and function. This makes holocrine secretion a more energy-intensive process due to the need for constant cell regeneration.
Contrast the cellular impact: In holocrine secretion, the cell dies as part of the secretion process, whereas in merocrine secretion, the cell remains alive and continues to produce secretions over time.
Provide examples for clarity: Holocrine secretion is exemplified by sebaceous glands, which produce oily secretions for the skin and hair. Merocrine secretion is exemplified by eccrine sweat glands, which produce watery sweat to regulate body temperature.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Holocrine Secretion
Holocrine secretion is a type of exocrine secretion where the entire cell disintegrates to release its contents. This process involves the accumulation of secretory products within the cell, leading to cell death and the release of both the cell's cytoplasm and its secretory products. An example of holocrine secretion is seen in sebaceous glands, which produce sebum for skin lubrication.
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Guided course
05:35
Modes of Secretion: Merocrine, Holocrine & Apocrine
Merocrine Secretion
Merocrine secretion is a mode of exocrine secretion where cells release their products via exocytosis without any loss of cellular material. This process allows the cell to remain intact while continuously producing and secreting substances. Sweat glands are a classic example of merocrine secretion, as they release sweat through ducts without damaging the glandular cells.
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Guided course
05:35Modes of Secretion: Merocrine, Holocrine & Apocrine
Exocrine Glands
Exocrine glands are glands that secrete their products through ducts to the external environment or into body cavities. They can be classified based on their secretion methods, such as holocrine and merocrine. Understanding the differences in secretion types helps in comprehending how various glands function and their roles in physiological processes, such as thermoregulation and lubrication.
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06:14Exocrine vs. Endocrine Glands
Related Practice
Textbook Question
Mark the following statements as true or false. If a statement is false, correct it to make a true statement.
Adipose tissue functions in insulation, warmth, protection, and shock absorption and is the major energy reserve in the body.
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Textbook Question
Mark the following statements as true or false. If a statement is false, correct it to make a true statement.
Loose connective tissue features protein fibers as its primary component.
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Textbook Question
Mark the following statements as true or false. If a statement is false, correct it to make a true statement.
Keratinocytes begin life in the stratum corneum and gradually are pushed into the stratum basale.
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Textbook Question
Compare and contrast the following pairs of terms:
Endocrine gland and exocrine gland
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Textbook Question
Compare and contrast the following pairs of terms:
Unicellular gland and multicellular gland
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